Spring construction



Nov.14,1944 v YCE 2,362,560

SPRING consmuci'ron Filed Nov. 6, 1942 Patented Nov. 14 1944 SPRING CONSTRUCTION Carroll Glenn Joyce, Carthage, Mo., assignor to Leggett and Platt, Incorporated, Carthage, Mo., a corporation of Missouri Application November 6, 1942, Serial No. 464,763

3 Claims. (01. 246) My invention relates to improvements in spring constructions adapted for use in the making. of spring beds and cots, and for use in the making of seats and backs of car seats, and of chairs, sofas, settees and the like.

One of the objects of my invention is the provision of a novel spring construction of the kind described, which requires but a relatively small amount of metal while affording an ample sufiiciency of springiness for the purpose intended.

A further object of my invention isthe provision of novel spring construction, which is simple, cheap to make, durable, not likely to get out of order, and which can be easily and quickly assembled into operative condition.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing which illustrates my invention,

Fig. 1 is a plan view of my invention in which the strands or wires, having the resilient loops, have their ends fastened by nails to the head and foot members.

Fig. 2 is a side elevation of which is shown in Fi 1;

Fig. 3 is an end elevation of the same.

Fig. 4 is an enlarged plan viewof one of the intermediate looped strands, shown in Fig. 1.

Fig. 5 is a side elevation of the strand shown in Fig. 5, the strand being shown attached re-, spectively to a portion of one of the end members and to a portion of the wire frame which is intermediate of the end members of the supporting frame.

Fig. 6 is a plan view of one of the outer looped strands.

Fig. 7 is a side view of what is shown in Fig. 6.

Fig. 8 is a side elevation of a modification in which the hooks at the outer ends of the looped strands have holding engagement respectively with two metal plates mounted on the tops of wooden head and foot members.

Fig. 9 is a plan view of a comer portion of what is shown in Fig. 8, enlarged.

Fig. 10 is an enlarged vertical sectional view of another modification in which the outer end portion of the looped strand rests in a transverse slot in the upper side of the adjacent end member, and extends downwardly against the outer face of the same, and has a hook which penetrates said member affording holding engagement therewith.

Similar characters of reference designate, similar parts in the different views.

Referring to Figs. 1 to '7 inclusive I designates two horizontal parallel end members of a rectangular supporting frame having bottom slats 2 having their ends respectively mortised into the under sides of the end members I. 3 designates brace blocks fastened to the inner sides of the end members I and to the upper sides of the slats 2.

Intermediate of and spaced from the end members I is a structure which includes upright coil springs 4, preferably cone shaped, having their lower ends supported on the adjacent slats 2.

Said structure includes a rectangular metal rod frame 5 encircling and disposed flatwise in the horizontal plane of the upper larger ends of the coil springs 4, to some of which the frame 5 is attached by clips 6, as the outer side springs 4. The upper coils of some of the springs 4 have extensions 1 provided-with hooks 8 which have holdin engagement with some of the next adjacent springs 4. Bracing wires 9 are attached to opposite sides of the rod frame 5 and to the extensions 10f the coil springs 4, as shown in Fig. 1.

Hi designates each of two sets of resilient strands, preferably spring steel wires, each having at each end, preferably, a hook II. Each strand II] has spaced from its ends one or more loops I2, which afford longitudinal elasticity to the strand, when in operative condition and carrying a load.

The inner ends of the strands ID, in each form of my invention, of the two sets of strands, have holding engagement with the adjacent side of the frame 5. The inner hooks of the two sets respectively engage opposite sides of said frame 5.

In the form shown in Fig. 1, the outer end portions of the strands I 0 of the two sets respectively rest in transverse slots I3 in the upper sides of the end members I. From the slots the strands I0 extend downwardly and have their hooks I I have holding engagement with nails I4 driven into the outer side of the adjacent end member I. Said slots I3 serve to properly locate the strands In and hold them from lateral movement prior to their being fastened to the members I. 1

In fastening the strands to the end members I with the nails I4, the strands are drawn tightly so as to give the strands an initial tension, preferably, or at least they are sufficiently tightened so as to be tensioned when loaded, as by someone sitting or lying upon them.

In the form shown in Figs. 8 and 9, the hooks II of the two sets of strands II] are fastened respectively to two metal plates I5 fastened to the upper sides respectively of the end members I, by having the hooks H extend through holes l6 providing a row in each plate l5. In other respects the form shown in Figs. 8 and 9 corresponds to the form shown in Fig. 1.

To avoid outward projections, the loops I2 are at the inner sides on the outer strands. The int-ermediate strands II] have the loops l2 alternate at opposite sides of each strand.

In the modification shown in Fig. 10, the construction corresponds to that shown in Fig. 1, excepting that the nails I4 are dispensed with and the hooks ll of the strands If] that engage the wooden end members I, are driven intothe outer sides of said end members below the slots l3, after the inner ends of the strands are hooked into engagement with the rod frame 5. By providing the unitary structure comprising the coil springs 4, the frame 5, clip 6 and bracing wires 9, the upper ends of the springs 4 are firmly held in fixed relation to each other, and the assemblage of the entire construction may be easily and quickly accomplished.

In the assembling of the entire structure, the inner ends of the strands II! have their hooks ll engaged with the rod frame 5. The coil springs 4 then have their lower ends fastened to the upper sides of the slats 2, after which the outer ends of one set of strands are fastened in the manner described with reference to the different forms, following which the other outer set of hooks II are fastened to the other member I.

My invention may be subjected to other modifications without departing from the spirit of my invention, as defined in the claims.

What I claim'is:

1. In a spring construction of the kind described, in combination with a wooden supporting frame comprising longitudinal slats and two cross end members mounted thereon and having each in its upper side slots transverse theretively, and means having engagement with said end members fastening said two sets of strands against the sides respectively of said end members which sides are most distant from each other.

2. In a spring construction of the kind described, in combination with a wooden supporting frame comprising longitudinal slats and two cross end members mounted thereon and having each in its upper side slots transverse thereto, of upright coil springs supported at their lower ends on said slats, an intermediate frame, means attaching said intermediate frame to the upper ends of said coil springs between and spaced from said end members, two sets of longitudinally elastic resilient metal strands, the strands of each set being attached at one set of ends to said intermediate frame, the strands of one to, of upright coil springs supported at their lowof said sets extending to and respectively through the slots, of one of said end members, the strands of the other set extending to and respectively through the slots of the other end member, the other ends of said two sets of strands having the forms respectively of hooks, and means fastening said two sets of hooked ends of said strands to the sides of said end members, which sides ar'e'most distant from each other.

3. In a spring construction of the kind described, in combination with a wooden supporting frame comprising longitudinal slats and two cross end members mounted thereon and having each in its upper side slots transverse thereto,

of upright coilv springs supported at their lower ends on said slats, an intermediate frame, means attaching said intermediate frame to the upper ends of said coil springs between and spaced from said end members, and two sets of longitudinally elastic resilient metal strands, the strands of said two sets being attached at one set of their ends to said intermediate frame, theother ends of said strands of said two sets terminatin in two sets of hooks, the strands of one of said two sets extending from said intermediate" frame to and through the slots of one of said end members, the strands of the other set extending from said intermediate frame to and through the slots respectively of the other of said end members, said two sets of hooks having-driven engagement respectively in said end members in-th'e sides thereof which are most distant' from each other.

CARROLL GLENN JOYCE. 

